Glass machine operating cam



0cm 1. J. A. LEWIS GLASS MACHINE OPERATING CAM Original Filed NOV. 5,1938 INVENTOR. JWES f7. AEW/s. f wfl $1 A ORNEY5.

Patented Oct. 1, 1940 PATENT OFFICE GLAss MACHINE oPEnATInG CAM M JamesA. Lewis, Hartford City, Ind; assignor to Sneath Glass Company, HartfordCity, Ind.

Original application November 5, 1938, Serial No].

239,041. Divided and this application Decem- I bet 14,1939, Serial No.309,144 7 I 1 Claim. (01. 74- 568) This invention relatesto anadjustablecam organization which is peculiarly applicable to glass formingmachines. v

Thisapplication is a division of the copending application, Serial No.239,041, filed November 1938, and entitled Glass machine and the latteris hereby made a part hereof.

The chief object of this invention is to provide a readily attachableand removable cam structure capable of angular, as well as axial,adjustment upon a control shaft and further capable of internaladjustment and all for cycle duration control purposes or, in otherwords, a universally adjustable cam arrangement.

The present invention permits time cycle control within the range ofadjustability of the invention as to initiation or cessation andduration of operation of a follower controlled or actuated mechanism.

Other objects and features of the invention will be set forth more fullyhereinafter.

The full nature of the invention will be understood from theaccompanying drawing, the following description and claim:

In the drawing Fig. 1 is a top plan view of an adjustable camarrangement adapted for varying the duration of operation of mechanismsuch as disclosed in the aforesaid copending application. A

Fig. 2 is a side view of said arrangement.

For an understanding of but one application or use of the invention,reference is had to the copending application referred to.

Therein, as well as herein, I indicates a rotating shaft. For any givenmachine set up it may be assumed to have a constant speed of rotation.This may represent-as in the copending application, the main controlshaft of a glass machine. Upon such shaft is mounted a plurality of suchcams, and the adjacent followers, engaged thereby in timed relation,control the several operations of such a glass machine. This controlshaft I60 rotates a predetermined rate relative to the machineoperation. This rate may be varied by substitution of other ratioconnections, as required or desired.

Encircling shaft I66 are blocks l6| secured together as at I62 and tosaid shaft as at I63. Thus, the block assembly is readily attachable toand removable from the control shaft. Also, as will be readily apparent,the block assembly may be adjusted longitudinally on said shaft as wellas angularly thereon.

One of the blocks has an arcuate extension adjustments of the waremaking machine are resi with faces IB -iand I66. Another arcuate segmentI61 has faces I68 and I69 and includes an arcuate slot I16. A bolt; IIIis arranged to thread into hole H2 in portion or extension I64 andthereby clamp the two arcuate portions to- 5 gether in adjustedposition.

It is to be understood, a follower-not shownengages face I65, face I64ctand I6Ia, as well as face I69. That is, the follower is of sufficientwidth to successively be engaged by or engage these faces in shaft andcam rotation. If secured together in registering overlapping relation,the face I69 is ineffective for control purposes and face I66 becomeseffective because portion I61 is smaller in angular degrees than por- 15tion I64.

When these arcuate segments are extended relative to each other, theangular interval between faces l65 and I69 determines the duration ofoperation control in the rotation of the control shaft I66.

It will be obvious from Fig. 1 that the other block I6I may be providedwith a suitable arcuate extension and adjustably support a cooperatingarcuate portion, as previously described.

As is well understood in the cam art, the slope of faces I65, I68, I66and I69 will be that required or desired dependent upon the character offollower contact desired, and the duration of initial and finalmovements of the follower consistent with minimum wear of said faces andthe follower in the repetitious cyclic operation thereof.

Therefore, with this adjustable cam arrangement, within the limits ofsaid adjustment, the 5 duration of control imposed thereby or resultingtherefrom may be varied. This is of great value in the glass machineindustry wherein liquid glass supplied to ware making machines may varyfrom day to day as to temperature, and 40 proper formation of that Ware,as recited, for example, in the copending application referred to,requires a certain duration of control or formation. In this instance,it is apparent no other quired other than to adjust portions I64 and I61 relative to each other and blocks [6| relative to shaft I60. Theseadjustments may be readily effected and with a minimum loss of time inmachine operation and with a minimum effort upon the part of themechanic or operator in charge of such machine.

While the invention has been illustrated and described in great detailin the foregoing description, the same is tobe considered asillustrative and not restrictive in character.

The several modifications described herein as well as others which willreadily suggest themselves to persons skilled in this art, all areconsidered to be within the broad scope of the invention, referencebeing had tothe appended claim.

The invention claimed is:

In a control cam arrangement capable of radial presentation to andmounting upon a shaft as well as axial and arcuate adjustment thereonincluding a plurality of successively arranged and connected arcuatebase structure forming members for shaft envelopment, means for securingthe enveloping base structure rigidly to the shaft in axially andangularly adjusted position thereon, the combination of'a laterallyprojecting cam portion integral with one member, said member having anexterior surface axially offset from the cam portion and contiguousthereto and of arcuate form, the arcuate form surface being concentricwith that of the supporting shaft, the face of the projecting camportion adjacent the arcuate surface being of plane character andsubstantially transverse to the structure axis, the said cam portionincluding two end faces at opposite ends and an outer face of arcuateform concentric with that of the shaft, another cam portion having innerand outer arcuate faces registering with the exterior and outer faces ofthe member and first mentioned cam portion respectively, and two endfaces, and a flat face for first mentioned cam portion plane facecontact, the outer faces of the cam portions constituting a singlefollower contactable surface where overlapped and one and opposed endface of each cam portion constituting opposed continuations of thefollower surface, and means connecting the cam portions together inadjusted relation with the flat faces in holding contact and the innerarcuate surface in contact with the exterior surface for radial support,said connecting means including an elongated arcuate slot in one camportion and coaxial with the structure axis, and a clamping membercarried by the other member and seated in the slot and having operativebearing on the slotted cam portion.

JAMES A. LEWIS.

